Construct a food
chain using all the representatives of the following species: cereal seeds,
locusts, foxes, eagles and voles. Answer the following questions:
1) Which of the
organisms performs the role of a third-order consumptive organism?
2) Which of the
organisms represented could be both 1st and 2nd order consumers? Why?

К сожалению, у нас пока нет статистики ответов на данный вопрос, но мы работаем над этим.